664462402613 has 2 divisors, whose sum is σ = 664462402614. Its totient is φ = 664462402612.

The previous prime is 664462402607. The next prime is 664462402651. The reversal of 664462402613 is 316204264466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545349756484 + 119112646129 = 738478^2 + 345127^2 .

It is a cyclic number.

It is not a de Polignac number, because 664462402613 - 2¹⁴ = 664462386229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664462402693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332231201306 + 332231201307.

It is an arithmetic number, because the mean of its divisors is an integer number (332231201307).

Almost surely, 2^664462402613 is an apocalyptic number.

It is an amenable number.

664462402613 is a deficient number, since it is larger than the sum of its proper divisors (1).

664462402613 is an equidigital number, since it uses as much as digits as its factorization.

664462402613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 664462402613 in words is "six hundred sixty-four billion, four hundred sixty-two million, four hundred two thousand, six hundred thirteen".